Quick notes on adding BCP Bridging to PopTop PPTP server:
• We are using pptpd version 1.2.1 since it has better support for broadcasting than the earlier 1.1.4 version.
• When building pptpd use the following configure option: ./configure –with-bcrelay to enable the bcrelay module.
• In /etc/pptpd.conf, add bcrelay eth0 (replace eth0 with the name of your internal interface) This will enable broadcast forwarding between the ppp interfaces as well as the interface you specify.
• In /etc/ppp/options-pptp, make sure that the mppe required option is commented. Since we will be playing games over this VPN connection, encryption is not necessary.
More can be found at http://non-standard.net/freebsd/game-vpn/vpnfaq.html.